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Kenwood KA-8011 User Manual

Kenwood KA-8011
26 pages
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Kenwood KA-8011 Specifications

General IconGeneral
TypeStereo Integrated Amplifier
Power Output80 watts per channel into 8Ω (stereo)
Frequency Response5Hz to 100kHz
Input Sensitivity2.5mV (MM), 150mV (line)
Damping Factor50
Output150mV (Line)
Speaker Load Impedance4Ω - 16Ω

Summary

External View of Amplifier

Internal View of Amplifier

Block and Level Diagrams

Block Diagram

Presents a functional block diagram of the amplifier's signal path.

Level Diagram

Shows signal levels at various points in the circuit.

Disassembly for Repair (Part 1)

Shaft Disassembly Procedure

Procedure for removing and handling the unit's shaft.

Power Transistor Removal

Instructions for removing the power transistor and heat sink.

Power Meter Access

Steps for disassembling and accessing the power meter component.

Disassembly for Repair (Part 2)

Rear Panel Assembly Removal

Procedure for removing the rear panel and associated assemblies.

Preamp Section Disassembly

Instructions for disassembling the preamp section.

Exploded View of Components

Exploded View Parts List

Parts List (Part 1)

Parts List (Part 3)

Circuit Description (Part 2)

TREBLE Section Equivalent Circuit

Equivalent circuit diagram for the TREBLE control section.

Flat TREBLE Equivalent Circuit

Equivalent circuit for achieving a flat TREBLE frequency response.

NF/RC Section Frequency Response

Graphs showing frequency responses of NF and RC sections.

Circuit Description (Part 3)

Boosted TREBLE Equivalent Circuit

Equivalent circuit for the TREBLE control when boosted.

BASS Control Circuit Explanation

Explanation of the BASS control circuit operation and its effects.

Flat BASS Equivalent Circuit

Equivalent circuit for achieving a flat BASS frequency response.

Circuit Description (Part 4)

Decreased BASS Control Circuit

Equivalent circuit for decreasing the BASS control.

Boosted BASS Control Circuit

Equivalent circuit for boosting the BASS control.

Circuit Description (Part 5)

Protection Circuit Overview

Description of the integrated circuit used for protection functions.

Zero-Potential Detector

Explanation of the zero-potential detection circuit.

Overload Detector

Explanation of the overload detection circuit and its flip-flop mechanism.

Line Voltage Detector

Explanation of the line voltage detection circuit.

Circuit Description (Part 6)

NOR Gate and Power-ON Muting

Explanation of the NOR gate logic and its role in power-on muting.

Relay Driver and Voltage Stabilizer

Explanation of the relay driver and voltage stabilizer circuit.

Circuit Description (Part 7)

HA12002 Equivalent Circuit

Equivalent circuit diagram for the HA12002 integrated circuit.

Adjustment Procedures

Preamp Offset Voltage Adjustment

Procedure for adjusting the preamp offset voltage to zero.

Power Meter Level Adjustment

Procedure for calibrating the power meter level.

Bias Current Adjustment

Procedure for adjusting the bias current for the power amplifier section.

Specifications

Power Output Specifications

Details the amplifier's power output capabilities per channel.

Total Harmonic Distortion Levels

Specifies the THD levels for different inputs and power outputs.

Frequency Response Details

Details the frequency response across various input types and bandwidths.

Input Sensitivity and Impedance

Lists the input sensitivity and impedance for different signal sources.

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